in src/theme.js [589:603]
function changeColorToHexAlphas(obj) {
if (typeof obj === 'object') {
for (var keys in obj) {
if (typeof obj[keys] === 'object') {
changeColorToHexAlphas(obj[keys])
} else {
let keyValue = obj[keys]
if(chroma.valid(keyValue)){
obj[keys] = chroma(keyValue).hex();
}
}
}
}
return obj;
}